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Created page with "Normal two-way calls are by default in open duplex with echo cancelling. Zenitel native devices support press-to-talk options to override open duplex: Press M key: Enter Talk mode, speaker muted. On the M-press device send a DTMF '*' Release M key: Return to open duplex. On the M-release device send a DTMF '#' ZCP relay the DTMF '*' / '#' events to the remote device. Speech mode of Zenitel native devices is also controlled by DTMF '*' / '#' events received from r..."
 
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Normal two-way calls are by default in open duplex with echo cancelling.
===Press-to-Talk During a Call===
During a normal two‑way call, Zenitel intercom devices operate in '''open duplex''' mode with built‑in echo cancellation.


Zenitel native devices support press-to-talk options to override open duplex:
Zenitel native devices also support '''Press‑to‑Talk (PTT)''' functionality, allowing users to temporarily override open duplex mode.


Press M key: Enter Talk mode, speaker muted. On the M-press device send a DTMF '*'
====Press-to-Talk Operation (Local Actions)====
* Press M key
**Device enters '''Talk Mode'''
** Loudspeaker is muted
** The device sends DTMF ‘*’ to the remote side
* Release M key
** Device returns to '''Open Duplex'''
** The device sends DTMF ‘#’ to the remote side


Release M key: Return to open duplex. On the M-release device send a DTMF '#'
The ZCP will relay these DTMF * and # events to the remote device.


ZCP relay the DTMF '*' / '#' events to the remote device.
Remote Control of Speech Mode (Received DTMF)
Zenitel native devices respond to DTMF signals received from the remote device:


Speech mode of Zenitel native devices is also controlled by DTMF '*' / '#' events received from remote:


On receive DTMF '*' : Enter Listen mode, mute microphone
On receiving DTMF ‘*’


On receive DTMF '#' : Return to open duplex
Device enters Listen Mode
Microphone is muted


This require no configuration. But does not apply if neither of the devices in the call are Zenitel native device.
 
 
On receiving DTMF ‘#’
 
Device returns to Open Duplex
 
 
 
 
Configuration Requirements
No additional configuration is required for Press‑to‑Talk functionality.
However, this feature only applies when at least one device in the call is a Zenitel native device.
If neither device in the call is Zenitel native, Press‑to‑Talk does not apply.




[[Category: Zenitel Connect Pro]]
[[Category: Zenitel Connect Pro]]
[[Category: Zenitel Connect Pro Features and Functions]]
[[Category: Zenitel Connect Pro Features and Functions]]

Revision as of 15:55, 13 February 2026

Press-to-Talk During a Call

During a normal two‑way call, Zenitel intercom devices operate in open duplex mode with built‑in echo cancellation.

Zenitel native devices also support Press‑to‑Talk (PTT) functionality, allowing users to temporarily override open duplex mode.

Press-to-Talk Operation (Local Actions)

  • Press M key
    • Device enters Talk Mode
    • Loudspeaker is muted
    • The device sends DTMF ‘*’ to the remote side
  • Release M key
    • Device returns to Open Duplex
    • The device sends DTMF ‘#’ to the remote side

The ZCP will relay these DTMF * and # events to the remote device.

Remote Control of Speech Mode (Received DTMF) Zenitel native devices respond to DTMF signals received from the remote device:


On receiving DTMF ‘*’

Device enters Listen Mode Microphone is muted


On receiving DTMF ‘#’

Device returns to Open Duplex



Configuration Requirements No additional configuration is required for Press‑to‑Talk functionality. However, this feature only applies when at least one device in the call is a Zenitel native device. If neither device in the call is Zenitel native, Press‑to‑Talk does not apply.

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